Israel-Iran war updates - March 6: Trump demands unconditional surrender of Iran; Iran's UN envoy rejects U.S. interference in leader succession

Iranian Ship IRIS Lavan, crew, docked at Kochi days before IRIS Dena incident, says government sources; two days ago, Iranian warship IRIS Dena, returning from International Fleet Review in Visakhapatnam, was torpedoed by a U.S. submarine off Sri Lanka’s coast, killing 83 people